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Services

Our Services

Advisory, Technology & Assurance to stimulate business productivity and profitability

Unrivalled breadth of expertise
C5 Alliance are a Microsoft Certifed Solutions Partner
C5 Alliance are a Microsoft Certifed Solutions Partner
Trusted by Regulated Industries
Proven track record with finance, legal, and government sectors.
Proven track record with finance, legal, and government sectors.
Leaders in Cybersecurity
Advanced protection with local incident response
Advanced protection with local incident response

Our Multi-disciplinary Approach

No matter what we do together, we take a broader view of the challenges that businesses face - helping you thrive.

OUR BESPOKE STRATEGIC FRAMEWORK
ADVISE
  • Assurance
  • Regulatory
  • Advisory
  • Tax
TRANSFORM
  • Cybersecurity
  • Data & AI
  • Cloud
  • Applications
RUN
  • Outsourcing
  • IT Services
  • People & Skills
Strategy & Execution

Strategy & Operating Models

Achieve clarity. Create momentum. Build a resilient business.

Digital Strategy and Management Consulting

Empowering business leaders to transform, adapt, and thrive

Transformation & Change

Realise benefits. Sustain change. Deliver outcomes.

Training and Adoption

Boosting Productivity with Microsoft Office Expertise
Technology & Security

Application Development

Transform, automate, and innovate through bespoke software solutions

IT Services

Transform, migrate, and run your operations with secure, resilient Managed IT Services

Cyber Security

From Strategy Development to Incident Response

AI & Advanced Analytics

Turn your data into predictions, productivity—and competitive advantage.

Cloud & Infrastructure

Scale and accelerate your business with resilient, secure platforms

Data Strategy & Platforms

Get better value from data

We act as the catalyst for your IT operations helping you run faster, safer, and smarter.

We deliver measurable business outcomes:

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  • Deep Sector Insight

    We understand your world and your challenges

  • Unique Multidisciplinary Approach

    Strategy, technology and support, delivered as one

  • Always-On Resilience

    Keep your operations running with 24x7x365 support

  • Start Small, Scale Fast

    Test and iterate with agile, lower-risk delivery

  • One Partner, Many Solutions

    We offer Advisory, technology and support all under one roof

  • Clear Roadmaps, Real Outcomes

    Technology plans aligned to business goals from day one

  • Trusted in Regulated Markets

    Proven delivery in complex, compliance-heavy environments

  • Reduce Cost, Increase Agility

    Optimise spend without sacrificing performance or security
Case Study

Real-Time Data Insights for a Property Manager

Enabling smarter decision making through real-time data insights using a scalable Microsoft Fabric data platform

Case Study

Secure AI Assistant

Secure AI Assistant to Enhance Efficiency at Surrey Satellite Technology Ltd

From compliance to connectivity, we help you stay ahead—no matter your pace or complexity.
Let’s chat!

Latest News & Insights

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The main facade of the States of Guernsey building
News

IT support for States of Guernsey

IT support for States of Guernsey staff will be provided by C5 Alliance from 1st August 2025, as part of a new two-year agreement. Following its decision to terminate its contract with Agilisys, this agreement with C5 Alliance is the first as part of the government’s new multi-vendor model; meaning services and projects will be delivered by a range of providers rather than one.

2025-06-06
A man using a laptop which is projecting a futuristic hologram of an AI agent that he is interacting with
Case Study

Embracing the Future of Design in an AI-Powered World

As AI-powered tools like ChatGPT redefine how we interact with technology, professionals across industries are reflecting on how their skills and roles need to evolve to stay relevant and impactful.

2025-05-15
An abstract image of an underwater scene overlaid with blue and orange computer code
Insights

Cyber-Secure IT

C5 Alliance Delivers Cyber-Secure IT for a Changing Threat Landscape. By taking a multi-layered detection approach, our enhanced Managed Services proposition is designed to give our clients greater peace of mind

2025-05-13